What conditions are needed for the durability of hydraulic brick machine molds?

　　The mold is a relatively large and expensive parts of the liquid pressure brick machine wear parts, we hope to buy the mold durable, in the purchase, we should not only look at the strength of the manufacturer, the mold material, but also to understand the processing process, the following we will introduce the majority of customers under the liquid pressure brick machine mold need to have what conditions?

 

Hydraulic brick machine

A. Wear resistance

 

　　When the raw material is pressed and formed in the mold, the formed brick slides along the surface of the mold, and friction is formed between the surface of the mold cavity and the brick. hydraulic brick press machine mold to wear-resistant, can avoid the mold due to wear and tear caused by molding brick billet size is not the same, material wear resistance is one of the basic and important properties of the mold, hardness is the main factor affecting wear resistance, the harder the mold, the smaller the amount of wear, the better the wear resistance;

 

Second, toughness

 

　　Mold working conditions are relatively poor, some molds are often subjected to large impact loads, resulting in brittle fracture, in order to prevent sudden brittle fracture of the mold, the mold should have high strength and toughness, the toughness of the mold depends mainly on the material carbon content, grain size and structure;

 

Third, fatigue resistance

 

　　In the process of working in the hydraulic brick machine mold, long-term cyclic stress, fatigue fracture often occurs, including the form of low energy multi-punch fatigue fracture, tensile fatigue fracture, contact fatigue fracture and bending fatigue fracture, fatigue fracture performance of the mold depends mainly on its strength, toughness, hardness and inclusions in the material content;

 

Fourth, high temperature resistance

 

　　When the mold work continuously for a long time, the mold and raw material friction, will make the mold surface temperature rise, if the choice of material or improper treatment, will cause the mold hardness and strength decline, thus reducing the mold wear resistance, so the mold material should have a high tempering stability to ensure that the mold in high temperature conditions with high hardness and strength;

 

Five, low temperature resistance

 

　　Mold in the process of repeated heating and cooling state, so that the cavity surface is subject to tension and pressure changes in stress, resulting in surface cracking and peeling, increasing friction, hindering plastic deformation, reducing dimensional accuracy, resulting in mold failure, thermal fatigue and cold fatigue is one of the main forms of failure of hot work mold, mold should have a high resistance to cold fatigue and thermal fatigue performance;

 

Six, corrosion resistance

 

　　Some of the raw materials pressed by the hydraulic press brick machine are corrosive, and contact with the mold will destroy the protective layer on the surface of the mold, thus corroding the mold, which will cause serious mold wear during long time continuous work.

 

　　To improve the service life of the hydraulic press brick machine mold, deal with good maintenance of the mold outside, should fundamentally improve the performance of the mold, the choice of high-quality wear-resistant materials, the use of advanced processing technology, from these aspects to buy hydraulic press brick machine mold, you can achieve the results you want.